**UPDATE**: Bobbi Kristina Takes A Turn For The Better

On Monday February 2, 2015, The Houston & Brown family says, “Bobbi Kristina is fighting for her life and is surrounded by immediate family. As her father Bobby Brown already stated, we are asking you to honor our request for privacy during this difficult time.”

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Sources connected with the family shares that doctors performed tests Monday morning and determined the swelling on her brain has gone down. In addition, she has been able to “move her eyes” … all important signs.

Sources learned that the oxygen levels in her brain have increased significantly — 4 times better than Sunday when she went in.

But the family has been told because Bobbi Kristina was deprived of oxygen for anywhere between 2 to 5 minutes while she was submerged in a tub, doctors fear neurological damage.

Brain swelling can also be called brain edema, elevated intracranial pressure, and cerebral edema.

Swelling can occur in specific locations or throughout the brain. It depends on the cause. Wherever it occurs, brain swelling increases pressure inside the skull. That’s known as intracranial pressure, or ICP. This pressure can prevent blood from flowing to your brain, which deprives it of the oxygen it needs to function. Swelling can also block other fluids from leaving your brain, making the swelling even worse. Damage or death of brain cells may result.

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Traumatic brain injury (TBI): A TBI is also called a head injury, brain injury, or acquired brain injury. In TBI, a sudden event damages the brain. Both the physical contact itself and the quick acceleration and deceleration of the head can cause the injury. The most common causes of TBI include falls, vehicle crashes, being hit with or crashing into an object, and assaults. The initial injury can cause brain tissue to swell. In addition, broken pieces of bone can rupture blood vessels in any part of the head. The body’s response to the injury may also increase swelling. Too much swelling may prevent fluids from leaving the brain.

Ischemic strokes: Ischemic stroke is the most common type of stroke and is caused by a blood clot or blockage in or near the brain. The brain is unable to receive the blood — and oxygen — it needs to function. As a result, brain cells start to die. As the brain responds, swelling can occur.